Jamb Physics 2019 Past Questions and Answers

Question 51:

• JAMB 2019

Neutrons were discovered by

A. Faraday
B. Dalton
C. James Chadwick
D. Rutherford

Question 52:

• JAMB 2019

The mass of a nucleus is the

A. Total number of its proton & neutrons
B. Number of its protons
C. Mass of its electrons
D. Total number of its protons & electrons

Question 53:

• JAMB 2019

Three resistors with resistance 200Ω, 500Ω and 1kΩ are connected in series. A 6v battery is connected to either end of the combination. Calculate the potential difference between the ends of 200Ω resistance.

A. 0.71V
B. 0.7V
C. 0.82V
D. 0.8V

Question 54:

• JAMB 2019

An a.c of 1A at a frequency of 800 cycles per second flows through a coil, the inductance of which is 2.5mH and the resistance of which is 5Ω. What is the power absorbed in the Coil?

A. 5W
B. 6W
C. 7W
D. 8W

Question 55:

• JAMB 2019

In semi-conductor, the carriers of current at room temperature are

A. Electrons only
B. Electrons and holes
C. Holes only
D. Electron and ions